Quasi-Realistic Performance Analysis of Modern Atkinson Cycle

In this study, a quasi-realistic thermodynamic analysis was performed to investigate the effects of design and operating parameters on performance single-cylinder modern Atkinson cycle engine. Fortran used for all calculations. It assumed that fuel-air mixture as working fluid, iso-octane fuel. The Wiebe function combustion process it specific heat fluid varies with temperature. calculations, transfer loss, efficiency, mechanical friction, pumping losses were taken into account. analysis, closing intake valve, equivalence ratio, geometric compression initial conditions proses independent variables. these variables brake mean effective pressure, power, fuel consumption, thermal efficiency investigated. Increasing inlet increasing delaying valve increased engine output torque. increase in temperature adversely affected consumption increased. Engine worsened when ratio fell below 0.8 rose above 0.9.